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The three men, one a 55-year-old man, were taken into custody and were assisting police with their enquiries.

Detective Senior Sergeant Luke Peachey from Gladstone CIB said it would take police hours to process the entire crop but expected to haul in "kilos and kilos of dried cannabis".

It was too early to put a value on the bust yesterday afternoon but Det Snr Srg Peachey said the potential street value would be a "significant amount of money".

"The sheer amount would suggest it's not for personal use but that will be part of the investigations in the coming days," he said.

"It's very pleasing for a significant amount of cannabis like this (to be) taken off the streets.

"It's quite a significant set up and any time someone is growing the amount of plants as this, it's more than likely there'll be more than one person (involved)."

He said police hoped to find out where the kilos of pot where supposed to end up. The cannabis crop was at various stages of maturation and was growing some distance from the house where the men were believed to be living.

UPDATE: 4.01pm:

POLICE have said it will take hours to bag what is believed to be "kilos and kilos" of cannabis uncovered on an Ambrose property.

Gladstone and Mount Larcom allegedly caught men in the act of tending to the cannabis in a joint operation.

More to come

EARLIER:

POLICE are raiding a property in Ambrose following a tip off from the public where they have already uncovered "kilos and kilos" of dried cannabis.

Police have allegedly caught three men in the act of tending to more than 1000 cannabis plants.